patch 8.2.4091: virtcol is recomputed for statusline unnecessarily

Problem:    Virtcol is recomputed for statusline unnecessarily.
Solution:   Just use "w_virtcol". (closes #9523)
diff --git a/src/version.c b/src/version.c
index b65dac3..525c86a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4091,
+/**/
     4090,
 /**/
     4089,